Instead there were more than 250 students the first day.
Since then, the couple has offered Relationships 101 to about 500 students every year, and it has remained the single most popular course at the school.
The students are asked to note how long it took to get to that point in each of their relationships and how the act made them feel.
Les Parrott says that this exercise "helps them recount, in specific terms, any pain or regret they have for having sex too soon.
"We play things like ' Sex and Candy,' ' I Touch Myself' and ' I Want Your Sex' – which," he pauses, "has taken on a whole new meaning.
Much time is also devoted to examining the so-called cultural propaganda behind contemporary pop songs, says Les Parrott.
"The popular notion is that Christians don't have fun.
The survey proved otherwise."Fun with sex soon became the rallying cry at Christian colleges everywhere.
While students aren't really supposed to be familiar with such activities, they know the vocabulary and offer up words like "cuddling," "making out" and "fooling around." Rydelnik writes all of these terms on the blackboard.
Then he crosses them out and writes "foreplay" on the board in large letters. "Let's talk about the truth."Rydelnik teaches students that they shouldn't kiss, hug, read books about sex or think about the person they are dating in a sexual way – even if they're engaged. "That's why God made wet dreams," he explains.